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Cod sursa(job #792162)
#include <fstream>
#include <string>
using namespace std;
int main(){
string s;
int i=0,c=0,l=0,n;
bool ok=false;
ifstream fi("text.in");
ofstream fo("text.out");
getline(fi,s);
n=s.length();
while (!((s[i]>='a' && s[i]<='z')||(s[i]>='A' && s[i]<='Z')) && i<=n) ++i;
while (i<=n)
if ((s[i]>='a' && s[i]<='z')||(s[i]>='A' && s[i]<='Z'))
{
++l;
++i;
ok=true;
}
else if (ok)
{
while (!((s[i]>='a' && s[i]<='z')||(s[i]>='A' && s[i]<='Z')) && i<=n) ++i;
++c;
ok=false;
}
if (ok) ++c;
fo<<l/c<<endl;
//fo<<l<<" "<<c<<endl;
return 0;
}